CBSE Class 11 Specific heat Calorimetry and Hygrometer Worksheet A

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1. Why is temperature gradient required for flow of heat from one body to another?

2. Why are Calorimeters made up of metal only?

3. If a body has infinite heat capacity? What does it signify?

4. A gas can have any value of specific heat depending upon how heating is carried out. Explain?

5. A 0.20 Kg aluminum block at 800C is dropped in a copper calorimeter of mass 0.05 Kg containing 200 cm3 of ethyl alcohol at 200C. What is the final temperature of the mixture? Given Density of ethyl alcohol = 0.81 g | cm³ ; specific heat of ethyl alcohol = 0.6 cal | g | °C ; specific heat of copper = 0.094 cal | g | °C, specific heat of Al = 0.22 cal | g | °C?

6. Why is there a difference in the specific heat curve as given by Delong’s petit law and the experimental result at low temperatures?

7. Specific heat of Argon at constant Pressure is o.125 cal | g | K and at constant volume is 0.075 cal | g | K. Calculate the density of argon at N.T.P. Given that J = 4.2J | cal?

8. How is heat loss reduced in Calorimeter?

9. Calculate the amount of heat necessary to raise the temperature of 2 moles of HE gas from 20°C to 50°C using:-

1) Constant – Volume Process 2) Constant Pressure Process Here for, He; C_V = 1.5 R and C_P = 2.49R

10. What is critical temperature? How will you differentiate between a gas and a vapour depending on critical temperature?

11. If for hydrogen CP – CV = a and for oxygen CP – CV = b where CP & CV refer to specific heat at constant pressure and volume then what is the relation between a and b?                  

Click on link below to download CBSE Class 11 Specific heat Calorimetry and Hygrometer Worksheet A.